Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7501fbd59b765d…

MALICIOUS

PDF

46.2 KB Created: 2020-07-29 17:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a9f412efac781181722ab86d817d47b SHA-1: c799ec2c48f538f97bac662d2900411ef918a2c6 SHA-256: ca7501fbd59b765dbe3a94144ca0421ed552655d2f1022236a0a96b8a5977dff
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=aschenputtel+geschichte+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, appears to be a lure related to 'Aschenputtel geschichte pdf'. The primary attack vector involves tricking the user into clicking the malicious link, which then likely leads to a phishing page or malware download.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=aschenputtel+geschichte+pdf
    • http://files.melancholicmodel.com/uploads/1/3/2/6/132682790/fititupum.pdf
    • http://files.gowenslcsw.com/uploads/1/3/1/1/131164431/gadilekimigewe_tujekok.pdf
    • http://files.upandovered.com/uploads/1/3/2/6/132681316/8733602.pdf
    • http://files.chrisbirdsnthings.com/uploads/1/3/0/7/130775304/7214409.pdf
    • http://files.poetryandpower.org/uploads/1/3/2/6/132682802/demiduviv_xupajegipu_jaxoj_xiratuxaxit.pdf
    • http://files.poetryandpower.org/uploads/1/3/2/6/132682802/demiduviv_xupajegipu_jaxoj
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5462/files/nesefomavonajul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdf
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/42274117222.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/12922592533.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/69289274566.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/71026197612.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9621/files/53024754607.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000777f.bin
42904ed42cda8a203a032fd7ae42893e94c1adff3430840ac7dd6b4866de22d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777F 4872 bytes
font_01_sfnt_off00008809.bin
4984fb1fd079dbe504fb7ef058c32a40970590a28fa30229a5376cd1b29c748b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8809 10756 bytes

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